# Control Property

## Overloads

| [Control](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.License.Control.htm#PIX_QMSAPI_DataObjects_License_Control) |  | The control number of the license. This is used to validate the serial number. |
| --- | --- | --- |

[](https://help.qlik.com/en-US/qlikview-developer/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.License.Control.htm) [](https://help.qlik.com/en-US/qlikview-developer/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.License.Control.htm)

## Control

The control number of the license. This is used to validate the serial number.

### Declaration

```

          public string Control { get; set; }
    
  
```

### Property Value

| Type | Description |
| --- | --- |
| System.String |  |